Edwin d



v (No Model.)

B D WASSELL ROLLS FOR ROLLING BARS INTO SHEETS. No. 410,258.

Patented Sept. 3', 1889.

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- VVZZness 28 n mans Phmo-Liihognpher. wan-in n. c,

UNITED STATES PATENT OFFICE.

EDWIN D. wAssELL, or PITTSBURG, PENNSYLVANIA, AssIeNoR' To ANN ISABELLWASSELL, or SAME PLAoE.

ROLLS FOR ROLLING BARS INTO SHEETS.

SPECIFICATION forming part of Letters Patent No. 410,258, datedSeptember 3, 1889.

Application filed January 28, 1889- Serial No. 297,861. (No model.)

To all whom it may concern.-

Be it known that I, EDWIN D. W-AssELL, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements in Rollsfor Rolling Bars into Sheets; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to rolls for reducing bars into sheets or plates,and has for its object the construction of such rolls that will notstrain or disintegrate the fiber of the metal while a bar is beingdistended laterally and reduced into a sheet or plate.

It has been proposed to reduce blooms, bil- 1ets,ingots, &c.,intosheets, plates, strips, 850., by subjecting the former to rolls whichwiden them by cutting grooves in the upper and lower side of the bloom,billet, or ingot from the first pass through the rolls until the metal,has been reduced sufficiently in thickness to flatten it into a sheet,plate, or strip. This way of rolling, however, tends to separate thefiber of the metal, for the reason that it is subjected to lateralstrain throughout the entire operation of rolling and as a consequenceany gaps or spaces in the bloom or billet are spread or increased insize.

Practice has long since demonstrated that the best merchant bar steel oriron is produced by turning the bloom, billet, or ingot frequently, andpresenting the sides thereof alternately to the pressure of the rollsuntil a predetermined thickness has been reached and a solidified massof metal produced. 'Thebar is then reduced in another pass of the rollsto any desired form or thickness. It is my purpose to operate upon barsof any given dimensions produced by the old Way of rolling, and widen ordistend them laterally into plates or sheets without weakening ordisintegrating the fiber.

The in vcntion will be hereinafter described, and particularly pointedout in the claims.

In the accompanying drawings, which form a partof this specification,Figure 1 represents afront elevation of a pair of rolls. Figs.

2, 3, 4., and 5, respectively, represent a crosssection of a bar afterit has passed through the several passes of the rolls on an enlargedscale.

Reference being had to the drawings and the letters thereon, A indicatesthe upper and B the lower roll. In the first pass 0 the upper roll isprovided with a series of projections or beads a, and the lower rollpresents a smooth cylindrical surface. In the second pass Dt-he upperroll is provided with beads a, which correspond with those of the firstpass, and the lower lpll is provided with beads b, which alternate withor work between the beads a of the upper roll. Both of these passes, itwill be observed, are of the same width, while the passes E F are widerthan C E, and F is Wider than E, and the upper and lower rolls in bothof the latter two passes presentplain smooth cylindrical surfaces. Eachpass is provided with collars c on the lower roll,which coincide withthe grooves 01 in the upper roll.

The operation is as follows: A bar being.

fed into the pass 0, the beads or on the upper roll out grooves e in theupper side of the bar, displacing the metal and causing it to fillthespaces between the beads a, and producing the bar G. (Shown incross-section in Fig. 2.) In this pass the lower roll performs no workother than to hold the bar up whilethe upper roll is cutting the groovese. The bar is then fed into the pass D, the grooves e being placed underthe beads CL and the bar held against any lateral movement, while thebeads 19 on the lower roll out the grooves f in the lower side of thebar intermediate of the grooves e on the upper side, displacing themetal and filling the spaces between the beads b, and forming thecorrugations shown in the bar II in .Fig. The corrugated bar is thenconducted through the pass E, and partly fiattened and distendedlaterally, as shown at I in Fig. 4:, and is then conducted through thepass F, and further flattened and distended, as shown at K in Fig. 5.

The number of passes in the rolls may be increased, if desired, so longas the same operation upon the metal being worked is maintained withoutdeparting from the spirit of my invention. In the rolling of the metalfrom the bar to the plate or sheet, as described, the metal is graduallydistended and the fiber of the metal retained intact.

Having thus fully described my invention,

what I claim is upper roll in the first pass is provided with a seriesof bead like projections and the lower roll is a plain cylinder, thesecond pass of the same width as the first, and the' upper roll havingprojections like those of the first pass for holding the bar, and bead-like projections on the lower roll alternating with or intermediate ofthe projections on the upper roll for corrugating the bar, and a pass orpasses for flattening and distending the bar laterally, substantially asset forth.

In testimony WhereofI affix my signature in presence of two witnesses.

EDWVIN D. WVASSELL.

\Vitn esses:

J. B. HYNDMAN, Jos. L. BERRY.

